11:14 fail lam yastajiybuu lakum fa'Ålamuu an-namaa unzila bi 'Ilmil-laahi wa al-laa ilaaha il-laa huwa* fa hal antum muslimuun

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Ahmed Raza Khan: Mohammed Aqib Qadri:
So O Muslims, if they are unable to reply to this challenge of yours, then know well that it is sent down only with the knowledge of Allah; and that except Him, there is no real God; so will you now accept?

Yusuf Ali:
"If then they (your false gods) answer not your (call), know ye that this revelation is sent down (replete) with the knowledge of Allah, and that there is no god but He! will ye even then submit (to Islam)?"

Pickthal:
And if they answer not your prayer, then know that it is revealed only in the knowledge of Allah; and that there is no Allah save Him. Will ye then be (of) those who surrender?